www.supercell.co.nz HRV filter last 2 years & allow good air flow putting less stress on the fan motor because it has the most pleats in HRV filters. Don't be scamed into buying filters with 5 or 6 pleats they will be lucky to last 1 year then your buying another filter sooner than expected costing you more than you should be paying...

www.supercell.co.nz HRV filters are designed to fit perfectly 2 years filtration no one offers quality price or performance to match.